Franconia ridge, New Hampshire. Image: WikimediaSixty miles beneath the birch-speckled forests of southern New Hampshire, the rocks are hotter than they should be—much hotter. First discovered in the 1970s, the heat anomaly was thought to be the remnants of an ancient hotspot in the Earth’s mantle. Instead, new seismic measurements suggest it’s an area of…

via New Hampshire Might Have Volcanoes One Day — Gizmodo

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